Liquid-feeding apparatus.



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LIQUID FEEDING APPARATUS.

APPLICATION FILED 0CT.26. T914.

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QT @ya SIM JAY.

LIQUID FEEDING APPARATUS,

APPLICATION FILED 00126k 19m W. JAY.

LOUID FEEDING APPARATUS.

APPLICATION mm ocT.26.19r4.

luhnt'ed Nov. L,

3 SHEETS-SHEET 3.

7%656 y WMM/m fold Jof an LIQUID-FEEIDBNG PPARATUS.

Specification of Letters Patent.

wenn aan, or emanen, immers.

Patented Nov. 2, i215.

Original application filed August 31, 1914, Serial No. 859,312. Divided` and this application filed October 2,

- .19111. serial no. seater To all 'whom t 'may concern.' A. l.

Be it known that l, WEBB JAY, a citizen of the United States, residing at Chicago, in the county of Cook and State of llllinois, have invented new and useful improvements `in Liquid-Feeding Apparatus, of which the following is a speciiication, reference being had to the accompanying drawings, forming a partthereof. y

This applicationv is a division ofiny application No. 859,312, tiled August 31,1914. The purpose of the present invention is to provide an improved liquid feeding appa-y ratus and particularly the tank structure therefor.`

It consists in the elements and features of construction shown and. described, as indicated in vthe claims.

ln the drawings: Figure 1 is a vertical sectional view of a device embodying this invention. Fig. 2 is a top plan view of the same.` Fig. 3 isa top plan View of a modification. Fig. 4 is a detail section taken as indicated at line Ll---l on Fig. 3. Fig. 5 is a detail section of .a modified construction alternative vwith that shown in Fig. ll. Fig. 6 is a detail section of the form of the device shown in Fig. 5 at the same plane as Fig. 5, at the opposite side of the device at the upper corner thereof. Fig. 7 is a side .elevation of an automobile equipped with this invention.

The apparatus shown in the drawings consistsof a tank, l, designed to have communication with a main storage or :supply tank, notshown, but positioned at a lower level, and also designed to have communi cation with means for reducing the pressure within the auxiliary tank, said means consisting in a pipe, 3, designed to lead from the device shown'to the intake'of the maniL whereby the suctionof the motor may be utilized tocr ate a reduction of pressure in the tank, 1. By reason of such reduction of pressure, it will be understood that the liquid fuel in the main supply tank, not shown, will he lifted to auxiliary tank,l 1\, whence it is permitted to `flow by gravity to the carburete'r of the motor, not shown. 4

Fig. l illustrates the;I details of construction of the tank 1. For reasons Vwhich require no explanation, it necessary, or at least desirable, that thpynuxiliary tank, 1, consist of two chambers, in one of which vthere is contained ,afloat mechanism by lexplosive motor,- not shown,`f`

which the various valves are controlled, and the other of which serves as an auxiliary reservoir from which the liquid fuel may iow to the point of use, as to the engine carbureter. As indicated in l, these two chambers are constituted as two separate cups or vessels, each opening upwardly and each provided with a transversely extendingiiange at its upper end. The outer vessel, 7, is considerably longer or deeper than the inner vessel, 8, and sufficiently larger in diameter to leave an annular space, 9, between the two when they are telescoped concentrically together. The vessel, 8, is

ment of its flange, 8a, upon the fiange, 7a, of the vessel, 7., and the parts are secured together in this position by means of a cover, 10, anda clamp ring, 11, connected thus suspended within the vessel., 7, by lodgtion wall in a. single outer vessel, and affords certain other advantages, as hereinafter eX- plained. I f

rllhe cover,10, is provided with a fuel intake opening connected by the pipe, 13, with the supply tank, 2,' as shown in Fig. 6, another opening connected by pipe, 3, with the intake manifold, 4, of the engine, .5, and a third opening fitted with a pipe, 15, communicating with the outer air. lt should be undervstood that the pipes, 3 and 15, are controlled by valves, 16 and 17, respectively, which arel so connected to a lever, 18, thatthey can only open alternately. When the valve, 16, on en and the valve', 17,.is closed, the engine suction is permitted to eect a reduc tion .of pressure-within the vessel, 8, thus causing a flow offuel, through the pipe, 134 linto the vessel and causing the float, 19, t0

rise. The iioat, 19, is connected, however;`

by a lever, 20, and link, 21, to an arm, 22,

- fulcruined coaXially with the lever, 1S, and

serving' to support one end of a tension spring, 28, whose opposite end is'connected to the lever, 18. The spring, 23, thus tending 4to fold the members 18- and 22, toward each other, either above or below their ful cruin, serves to resist the rise of the float,

19, since vit would cause an unfolding ofv said members and the rise of the float is consequently delayed until the buoyant force of the constantly incoming liquid is suflicient to overcome the eHect of `the spring, 23.

The float then rises suddenly to its upper titl' tank, 2, and will increase in volume.

limit of movement, throwing the, parts to the positions indicated in full lines in Fig. l. The pull oi' thespring, 23, causes suf'- icient upward swing of the lever, 18, to unseat the air valve, 17, and to seat the valve,

"16, thus cutting od the engine suction andrestoring atmospheric pressure within the vessel, 8. This permits the fuel accumulated in the vessel, 8, to flow downward'into the vessel, 7, past the flap valve, 24, and from the vessel, 7, it will flow by gravity' through the pipe, 25, to the carbureter, 6. When the majority of the fuel has passed from the vessel, 8, to the vessel, 7, the buoyant force beingthus removed from the dean-'19, the lat-- ter will fallto its lower limit which is determined by the engagement of the stop shoulder, 20a, with the projecting end, 22, of the member, 22, as the latter is folded downward by the weight of the ioat acting through the link, 21. A. l'

To insure the free flow of the liquid from, the vessel, 7 however, it is essential that this chamber have commxmiczition with the at mosphere at all times, and in the present construction this is aorded through the annular space, f-F, from which a pipe, 26, leads to a iittingg, 27, whose stem, 28, is open to the air. The other arm of the 'T fitting, 27, is coupled to the pipe, 15, whereby the pipe, 28, serves as a commonair vent for both chambers as occasion requires. It will be understood that with the tank, 1, locatedin the vicinity of the engine, the liquid fuel within it will usually become heated to a temperature higher than that in the su ply uch.- increase within the vessel, 7, is accommodated by the annular space, 9, and the pipe, 26, into whichthe liquid may rise Without interfering with the operation of the device,

When this expansion of` the liquid is due to heat eifectingrthe lower portion of the ves. sel, 1, such heat is likely to cause more or less volatilization of the fuel in this lower portion of the vessel, but if the liquid has eready risen into the pipe, 26, the volatilized portion will tend simply to elevate the liquid portion still :further instead oi' escaping from it in the form oi' bubbles. lt is, therelife, desirable to provide in the pipe, 26, a chamber, 26a, having a considerably greater cross section than the pipe, 26, thus affording suiicient aree at the surface of the liquid to permit escape oi the confined gas in the torni of bubbles auf@ prevent any undue rise in the level ci thel liquid from this cause.

lf desired, the lateral"'projection of the pipe, 26, may beentirely avoided by substituting a pipe, 3G, connecting,` with the annular space, 9, but passing through. the

chamber, 8, and through the cover, 10, as

indicated in Figs. 3 and f1. ln this case the cover, l0, is epertured to eccommodate'the intense sel, 7, is provided with an applied flange,

TY, preferably of heavier material than the body ot the tzu-ik, and this denge 1s provided 30, throughout its extent through the" illustra-tes an even more compfct with threaded apertures, 7', to receive the screws, 12, by which the head, 16X, is clamped in place hacking washers, 35, are posi tioned between these parts to render the construction gas-tight. ln this construction ,the

vent pip-e from the annular spece9x con` sists simply of e short` tube, 36, fixed inv the '1" `flange, 7", and protruding into e recesmpl,

in' the head, 10X. This recess communicates with a duct, 10E, formed in the cast liead, 10", and leading into the space above the valve, 17, thus aording acommon air vent ,f

for the two chambers oi' the device. instead of the cup, 29, this air vent may be fitted with a. goose neck, 37, of sucient length te accommodate a rise of level due to the inclination of the vehicle upon any ordinary grade, and by reason oi its shape serving to prevent the entrance of dust or other iin-7 v purities which might interfere with proper seating of the valve, 17, or which might contaminate the fuel. v

1. A tank for the purpose indicated com prising two hambers, one suspended within the other, anupwardly openingl air inlet for one chamber, en air inlet for the other charnber comprlsmg a conduit communicating with theilateral space between the chambers,

and a common air vent connecting the two air inlets abovethe" tank. n

A tank for the purpose indicated coinprising two chambers constructed oi' two' upwardly opening vessels, one vessel having a rim flange extending toward its axis, the l other vessel having; e rim ange extending away from its axis, the second yessel being suspended within the rst vessel by the seating of such ilange upon the flange oi the first, a cover sented-over said ilinges,end.

means clamping together the cover andthe flange of the first vessel with the 'ci' the other vessel between them,

3. A tank for the purpose indicated prising two chambers constructed. of two up wardly opening fvessels each having a dan 'ed rim, one of said vessels being susen ed within the other bythe seating of its flange upon the flange 'of the' other, a

f eover seated over said danges,y seid cover having anhperture' serving'es -an air vent for the inner vessel, the'. angeof said vesreel A sel having' an aperture communicating with the lateral space between the chambers and the cover having a duct positioned to' regis terwith said aperture and leading tothe aforesaid vent aperture, and means securing said cover to the flange. of the outer vessel with the flange of the inner vessel interposed. j

l. In a motor'vehiele, an auxiliary fuel tank positioned above the fuel inlet of the motor, and comprising two chambers, one of which is telescoped within theother so as to form an annular portion of one chamber around the other; the top plate of said tank having a passage which communi'rates l5 of liquid in the tank, and terminating in a 20 downwardly opening portion.

In testimony whereof, I have hereunto set my hand at Detroit, Michigan, this 23rd day of October, 1914.

WEBB JAY.

Witnesses: l

E. BOWEN, EnNA M. MACINTOSH. 

